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Write the law of mass action for the following quilibrium 2N2O5(g) --> 4 NO2(g) + O2(g).
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- 14.(3pts) Among the following, determine which have similar chemical properties:Na, Mg, K, K+. Briefly explainWhat is the molarity of each of the following solutions: (a) 15.0 g of Al21SO423 in 0.250 mL solution, (b) 5.25 g of Mn1NO322 # 2 H2O in 175 mL of solution, (c) 35.0 mL of 9.00 M H2SO4 diluted to 0.500 L?Write a balanced chemical equation for the reaction thatoccurs when (a) Mg(s) reacts with Cl2(g); (b) barium carbonatedecomposes into barium oxide and carbon dioxide gaswhen heated; (c) the hydrocarbon styrene, C8H8(l), is combustedin air; (d) dimethylether, CH3OCH3(g), is combustedin air.
- The pH of a 0.2 M solution of CuSO4 is 4.0. Write chemical equations to explain why a solution of this salt is neither basic [from the reaction of SO42-(aq) with water] nor neutral, but acidic.Nn.156. Subject :- ChemistryThe molecular weight of sperm whale myoglobin is 17.8 kDa.17.8 kDa. The myoglobin content of sperm whale muscle is about 80 g · kg−1.80 g · kg−1. In contrast, the myoglobin content of some human muscles is about 8 g · kg−1.8 g · kg−1. Compare the amounts of O2O2 bound to myoglobin in human muscle and in sperm whale muscle. Assume that the myoglobin is saturated with O2,O2, and that the molecular weights of human and sperm whale myoglobin are the same. How much O2O2 is bound to myoglobin in human muscle? How much O2O2 is bound to myoglobin in whale muscle? The amount of oxygen dissolved in tissue water at 37°C37°C is about 3.5×10−5 M.3.5×10−5 M. What is the ratio of myoglobin‑bound oxygen to dissolved oxygen in the tissue water of sperm whale muscle?
- Metallic titanium and its alloys (especially those with aluminum and vanadium) combine the advantages of high strength and lightweight and are therefore used widely in the aerospace industry for the bodies and engines of airplanes (Figure 2.4). The major natural source for titanium is the ore rutile, which contains titanium dioxide (TiO2).(a) An intermediate in the preparation of elemental titanium from TiO2 is avolatile chloride of titanium (boiling point 136°C) that contains 25.24%titanium by mass. Determine the empirical formula of this compound.(b) At 136°C and atmospheric pressure, the density of this gaseous chloride is 5.6 g L-1 . Under the same conditions, the density of gaseous nitrogen (N2, molar mass 28.0 g mol-1 ) is 0.83 g L-1 . Determine the molecular formula of this compound.(c) The titanium chloride dealt with in parts (a) and (b) is produced by thereaction of chlorine with a hot mixture of titanium dioxide and coke (carbon), with carbon dioxide generated as a…Boric acid, B(OH)3, is an acid that acts differently from the usual Brønsted-Lowry acids. It reacts with water according to B(OH);(aq) + 2 H,0(€)2B(OH), (aq) + H;O* (aq) K, = 5.8 × 10¬10 (a) Draw Lewis structures for B(OH); and B(OH)4. Can these be described as Lewis acids or Lewis bases? (b) Calculate the pH of a 0.20 M solution of B(OH)3(aq).Write the balanced chemical equation for conversion of Al(s) to KAl(SO4)2·12H2O(s) in aqueous solution.
- Describe the role of (i) NaCN in the extraction of gold from gold ore. (ii) Si02 in the extraction of copper from copper matte. (iii) Iodine in the refining of zirconium. Write chemical equations for the involved reactions.Consider the series of reactions to synthesize the alum (KAl(SO4 )2 · xH2O(s)) from the introduction. (a) Assuming an excess of the other reagents, from one mole of aluminum Al (s), how many moles of alum will be produced? (b) Assuming an excess of the other reagents, from one mole of potassium hydroxide KOH, how many moles of alum will be produced? (c) Assuming an excess of the other reagents, from one mole of sulfuric acid H2SO4 , how many moles of alum will be produced? (d) If you start the synthesis with 1.00 g of Al, 40.0 mL of 1.50 M KOH, and 20.0 mL of 9.00 M H2SO4 , which of the three will be the limiting reagent? (e) Assuming that the product is anhydrous (that there are no waters of hydration), calculate the theoretical yield of alum, in grams, based on the amounts of reagents in part (d). 3. Consider the nickel salt: (NH4 )2Ni(SO4 )2 ·y H2O (Ammonium Nickel Sulfate Hydrate), where y is the number of coordinated waters. (a) Assuming that the product is anhydrous (y = 0),…Write the balanced net ionic equation for the precipitation of silver (I) carbonate from aqueous solitons.